解剖学报

解剖学报 ›› 2023, Vol. 54 ›› Issue (2): 226-230.doi: 10.16098/j.issn.0529-1356.2023.02.015

• 组织学胚胎学发育生物学 • 上一篇    下一篇

延时成像监测第二极体释放预测卵胞质内单精子注射卵子受精及胚胎发育效率

薛林涛*  王世凯  毛献宝  李政达  张小慧  韦娉嫔   

  1. 广西壮族自治区人民医院生殖医学与遗传中心， 南宁 530021
  • 收稿日期:2021-10-08 修回日期:2021-11-17 出版日期:2023-04-06 发布日期:2023-04-06
  • 通讯作者: 薛林涛 E-mail:ltxgxh@163.com
  • 基金资助:
    广西自然科学基金面上项目;南宁市重点研发计划

Monitoring second polar body exclusion by time-lapse in predicting fertilization and embryo development efficiency of intracytoplasmic sperm injection

XUE  Lin-tao*  WANG  Shi-kai  MAO  Xian-bao  LI  Zheng-da  ZHANG  Xiao-hui  WEI  Pin-pin    

  1. Reproductive Medical and Genetic Center，People’s Hospital of Guangxi Zhuang Autonomous Region, Nanning 530021, China
  • Received:2021-10-08 Revised:2021-11-17 Online:2023-04-06 Published:2023-04-06
  • Contact: XUE Lin-tao E-mail:ltxgxh@163.com

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摘要：

目的  探讨延时成像监测第二极体（Pb2）释放在预测卵胞质内单精子注射（ICSI）周期卵子受精及胚胎发育效率中的临床应用价值。   方法  回顾性分析278个接受ICSI助孕治疗患者的临床资料和延时成像监测胚胎培养数据，探讨卵子ICSI注射后Pb2释放与否以及具体释放时间与受精及胚胎发育结局的关系。   结果  延时成像监测ICSI注射后Pb2释放平均时间为（3.03±1.21）h；有Pb2释放组的受精率、2原核（2PN）受精率及5d（D5）囊胚转化率均显著高于无Pb2释放组（99.95% vs 1.75%，P<0.001；97.18% vs 0.66%，P<0.001；60.50% vs 16.67%，P<0.05）；Pb2释放时间>3~4 h组2PN受精率显著高于0~2 h组和>5 h组（98.80% vs 93.81%，P<0.05; 98.80% vs 95.40%，P<0.05）；Pb2释放时间与D3胚胎平均卵裂球数显著相关（P<0.001）；>3~4 h组D5囊胚转化率显著低于>2~3 h组（56.23% vs 67.23%，P<0.05），>4~5 h组显著低于0~2 h组、>2~3 h组（46.61% vs 62.30%，P<0.05; 46.61% vs 67.23%，P<0.05），>5 h组D5囊胚转化率为7.14%，均显著低于其他4组（P<0.05）；>3~4 h组D5优质囊胚转化率显著低于0~2 h组、>2~3 h组（9.92% vs 16.39%，P<0.05; 9.92% vs 20.72%，P<0.05），>4~5 h 组显著低于>2~3 h组（11.02% vs 20.72%，P<0.05）。   结论  延时成像监测Pb2释放可以准确预测受精结局，Pb2释放时间与胚胎发育潜力显著相关，是有价值的预测ICSI卵子受精及胚胎发育结局的形态学指标。 

关键词: 极体, 受精, 胚胎发育, 延时成像, 卵胞质内单精子注射, 人 

Abstract:

Objective  To explore the clinical value of second polar body (Pb2) exclusion monitoring by time-lapse in predicting the fertilization and embryo development efficiency for intracytoplasmic sperm injection (ICSI).     Methods  A retrospective research was performed on 278 patients treated with ICSI, the clinical data and Time-lapse monitoring embryo culture data were collected and analyzed, to explore the exclusion of Pb2 after ICSI and the relationship between the specific exclusion time and the outcome of fertilization and embryo development.     Results  The average time of Pb2 exclusion after ICSI was (3.03 ± 1.21) hours; The fertilization rate, 2 pronucleus(PN) fertilization rate and 5 days(D5) blastocyst formation rate in the Pb2 exclusion group were significantly higher than those in the without Pb2 exclusion group (99.95% vs 1.75%, P<0.001; 97.18% vs 0.66%, P<0.001; 60.50% vs 16.67%, P<0.05); The 2PN fertilization rate in Pb2 exclusion time >3-4 hours group was significantly higher than that in 0-2 hours group and >5 hours group (98.80% vs 93.81%, P<0.05; 98.80% vs 95.40%, P<0.05); The exclusion time of Pb2 was significantly correlated with the average number of blastomeres in D3 embryos (P<0.001). The D5 blastocyst formation rate of 3-4 hours group was significantly lower than that of >2-3 hours group (56.23% vs 67.23%, P<0.05), >4-5 hours group was significantly lower than 0-2 hours group and >2-3 hours group (46.61% vs 62.30%,  P<0.05; 46.61% vs 67.23%,  P<0.05), and D5 blastocyst formation rate of >5 hours group was 7.14%, which were significantly lower than that of the other four groups ( P<0.05). The formation rate of D5 high-quality blastocysts in 3-4 hours group was significantly lower than 0-2 hours group and > 2-3 hours group (9.92% vs 16.39%,  P<0.05; 9.92% vs 20.72%,  P<0.05), and D5 high-quality blastocysts formation rate in > 4-5 hours group was significantly lower than that in > 2-3 hours group (11.02% vs 20.72%,  P<0.05).     Conclusion  Monitoring Pb2 exclusion by Time-lapse can accurately predict fertilization outcome. The time of Pb2 exclusion is significantly correlated with embryo development potential. It is a valuable morphological index to predict fertilization and embryo development outcome in ICSI.

Key words: Polar body, Fertilization, Embryo development, Time-lapse imaging, Intracytoplasmic sperm injection, Human

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